Tuesday’s ad is for Guinness, from the 1950s. While the best known Guinness ads were undoubtedly the ones created by John Gilroy, Guinness had other creative ads throughout the same period and afterward, too, which are often overlooked. This ad, one of many that used Lewis Carroll’s Alice in Wonderland is titled “Mushroom Growth,” and features a story about Alice talking to a caterpillar who drinks Guinness to grow stronger, but Alice concludes she doesn’t have to grow barley and hops, since the people at Guinness already do that and all she has to do is drink their beer.